If it helps, results vary a lot and a quiet fortnight means very little — it is the single change that made the most difference. Has anyone found love using the harmony dating website?
For what it is worth, taking a break when it starts to feel like admin is sensible — worth testing yourself rather than taking my word for it.
One thing I notice: treating it as a numbers game is the fastest route to burning out — it is not complicated, it is just easy to skip.